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我一直在试图遵循一些教程，我可以找到一个mvc应用程序允许用户对应用程序进行身份验证并获取访问和刷新标记。不幸的是，我找不到足够清楚的地方，以便我可以跟踪正在发生的事情。我从谷歌的sample code开始，然后发现其他一些像this one和this one。使用mvc从google api获取访问令牌的困惑
当我运行我的应用程序时，我试着去http://localhost:61581/Integration/Google/IndexAsync它碰到了那个方法，最终碰到了AppFlowMetadata.GetUserId方法，然后碰到了我自定义的TenixDataStore类的GetAsync方法。
易混淆的东西是
- 首先，我该怎么正确的URL /方法？我想我是基于谷歌的代码示例，但不知道。
- 我以为我会得到的关键是电子邮件地址，而不是一个GUID。这是谷歌如何识别用户？
- 如果我要去正确的网址，为什么网页只是挂起，永远不会返回。我预计它会打开一个没有发生的谷歌授权页面。
这是我的代码。
AppFlowMetadata类
using System.Web.Mvc;
using Google.Apis.Auth.OAuth2;
using Google.Apis.Auth.OAuth2.Flows;
using Google.Apis.Auth.OAuth2.Mvc;
using Google.Apis.Gmail.v1;
using Tenix.Domain.Constants;
namespace MyApp.Areas.Integration.Controllers
{
public class AppFlowMetadata : FlowMetadata
{
private static readonly IAuthorizationCodeFlow flow =
new GoogleAuthorizationCodeFlow(new GoogleAuthorizationCodeFlow.Initializer
{
ClientSecrets = new ClientSecrets
{
ClientId = APIConstants.GMailApiKey,
ClientSecret = APIConstants.GmailApiSecret
},
Scopes = new[] {GmailService.Scope.GmailReadonly},
DataStore = new TenixDataStore()
});
public override IAuthorizationCodeFlow Flow
{
get { return flow; }
}
public override string GetUserId(Controller controller)
{
// In this sample we use the session to store the user identifiers.
// That's not the best practice, because you should have a logic to identify
// a user. You might want to use "OpenID Connect".
// You can read more about the protocol in the following link:
// https://developers.google.com/accounts/docs/OAuth2Login.
var user = controller.Session["UserID"];
if (user == null) return null;
return user.ToString();
}
}
}
GoogleController
using System.Threading;
using System.Threading.Tasks;
using System.Web.Mvc;
using Google.Apis.Auth.OAuth2.Mvc;
using Google.Apis.Gmail.v1;
using Google.Apis.Services;
namespace MyApp.Areas.Integration.Controllers
{
public class GoogleController : Controller
{
public async Task IndexAsync(CancellationToken cancellationToken)
{
if (Session["UserID"] == null)
{
Response.Redirect("~/Login.aspx", true);
}
var result = await new AuthorizationCodeMvcApp(this, new AppFlowMetadata()).AuthorizeAsync(cancellationToken);
if (result.Credential != null)
{
var service = new GmailService(new BaseClientService.Initializer
{
HttpClientInitializer = result.Credential,
ApplicationName = "Tenix Gmail Integration"
});
}
}
}
}
TenixDataStore类
using System;
using System.Threading.Tasks;
using DataBaseUtilitiesTEN;
using Google.Apis.Json;
using Google.Apis.Util.Store;
using Newtonsoft.Json.Linq;
using Synergy.Extensions;
using Tenix.Domain.Data.Respositories;
using Tenix.Domain.Model.Integration;
using Tenix.Domain.Services;
namespace MyApp.Areas.Integration.Controllers
{
public class TenixDataStore : IDataStore
{
private readonly string conStr = ConnectionStrings.GeneralInfo;
private CredentialService _service;
public TenixDataStore()
{
_service = new CredentialService(new CredentialRepository(conStr));
}
public Task StoreAsync<T>(string key, T value)
{
if (string.IsNullOrEmpty(key))
throw new ArgumentException("Key MUST have a value");
var serialized = NewtonsoftJsonSerializer.Instance.Serialize(value);
var jObject = JObject.Parse(serialized);
var access_token = jObject.SelectToken("access_token");
var refresh_token = jObject.SelectToken("refresh_token");
if (access_token == null)
throw new ArgumentException("Missing access token");
if (refresh_token == null)
throw new ArgumentException("Missing refresh token");
_service.SaveUserCredentials(new UserCredential
{
EmailAddress = key,
AccessToken = (string)access_token,
RefreshToken = (string)refresh_token
});
return Task.Delay(0);
}
public Task DeleteAsync<T>(string key)
{
_service.DeleteCredentials(key);
return Task.Delay(0);
}
public Task<T> GetAsync<T>(string userId)
{
var credentials = _service.GetUserCredentials(userId.To<int>());
var completionSource = new TaskCompletionSource<T>();
if (!string.IsNullOrEmpty(credentials.AccessToken))
completionSource.SetResult(NewtonsoftJsonSerializer.Instance.Deserialize<T>(credentials.AccessToken));
return completionSource.Task;
}
public Task ClearAsync()
{
return Task.Delay(0);
}
}
}
AuthCallbackController
using Google.Apis.Auth.OAuth2.Mvc;
namespace MyApp.Areas.Integration.Controllers
{
public class AuthCallbackController : Google.Apis.Auth.OAuth2.Mvc.Controllers.AuthCallbackController
{
protected override FlowMetadata FlowData
{
get { return new AppFlowMetadata(); }
}
}
}